1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2ca012273673fe1d5f76602fd5f6f787e61bd73032f91da2cb62e1296071c5. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d6a2980-84a6-496f-ba06-18f1412decf6.json and https://artists.proofprofile.net/proofs/artist/2d6a2980-84a6-496f-ba06-18f1412decf6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe362bb8f13bcace7a3eb671243042d19f7540204f49780df3fa7ed3905c8c9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32513663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf919b6f5ed2dec88e310dfff7e1063180c0206d500a3f1099ffa835b7910a5. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:03:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32513664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc20aa5e546731d64b1c91ef2891a7fcf9ca0c839eba1eb25f66aeac77b473bb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:10:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32513665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f11e2c022debbf54a69ad3068ef280b81a56ee85c73cae742a10ac010fb585. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2540989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45b2117a6fbc0485507eca85aa03dc8a6cac2ede1d2d01b71c41a7440897618. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2540990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a5bdb2226abced1fe70955a87c18f11b46032423029cdb72dabbb879b369c9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:08:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2540991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec664876db859450f93d9ab6a5e326022fc66cb9b49780b06cb5fa1df134e0e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2540992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbac728ad53cf8415c50e6d4361f82963d59e1d61d3b26280ddd16a4579b22b1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2540993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5bd98c04179f57138d9ea7c49ac9705f619cf08bbf26c96ab420859df6840f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2540994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e2e23b63277360286872d797e07e36bccf4dbd28e7e98bd85b2cff03d1069c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2540996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3e31b4c55489c72e4a2073681ed11f79f1e9affa9cccc6257c0b1a391bf835. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:10:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2540998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb684d3d3b386b2aa809cc22284ee825efff8ac5c2c923cae8e88d5195b40d89d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2541001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279de4812b10dcfd3f23efcb2e2f5d435404adc18a6f901e2b1b68479d6ec8a4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2541002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743a51ea21ced7e7f390948600dc1d6abe26f00854189b8695cada220257831e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2541003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce4bbbafc113687c86b57d3b562d04a39d0404bac87533c8f1e4fb397e498b9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2541004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ae4d4c6fbf47b68b648a57007ca4d5896478488cd8b3a01677577c6250eee8. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2541005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbce7bf0788479f1ce98b3d833d5484ee73c2bfb48137af779b09aabe349e23. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:52:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2541007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0826dc03744ca6efb39bcde11f36616cf85ebc6901d40c8476a8da32608dfec9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2541008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6d57b4a358f89678231e8a15c8e0c5c42a7191d7a3d28433cea2522b350789. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2595196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7439fd846b6f751cf4082c1136b0a7ad4051f9dfabc667eb2954194c3d513a. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:48:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2587658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33c6c3f805863dc7fbc01fcb481e377c779a10416ab7b10a83bd4c13dc020c5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:58:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFE2510940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83355d69ae28888280f5c79f60af34bbf1af798318643d948f8a3931b4a3805e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ792561012.